Here is the weekly manga ranking for May 3rd - 9th.

*1, 237,021 *,855,758 Naruto vol.51
*2, 178,856 *,724,595 Nodame Cantabile vol.24
*3, 160,614 *,429,967 Katekyo Hitman Reborn! vol.29
*4, 136,207 *,359,882 Gintama vol.34
*5, 119,802 *,302,069 Bakuman vol.8
*6, 111,567 *,245,764 New Prince of Tennis vol.3
*7, *68,185 *,164,621 Toriko vol.9
*8, *66,392 1,147,251 Fullmetal Alchemist vol.25
*9, *59,657 *,151,256 Mayoi Neko Overrun! vol.1
10, *52,804 *,428,538 Ookiku Furikabutte vol.14

11, *51,321 *,121,099 Faster than a Kiss vol.7
12, *47,154 *,*98,284 Jin vol.18
13, *43,999 *,357,018 xxxHOLiC vol.17
14, *40,656 *,*40,656 Drop vol.10
15, *39,989 *,*39,989 Shinjuku Swan vol.22
16, *39,340 *,*97,178 Yu-Gi-Oh! GX vol.7
17, *36,095 *,*49,687 Hyakki Yakosho vol.11
18, *34,478 *,*85,884 Psyren vol.11
19, *30,972 *,121,088 Bokutachi wa Shitte Shimatta vol.9
20, *29,310 *,182,965 Mei-chan no Shitsuji vol.12

21, *26,529 *,161,656 Arakawa Under the Bridge vol.10
22, *26,179 *,*75,087 Shin Say Hello to Black Jack vol.8
23, *25,613 *,143,328 Clover vol.23
24, *25,406 *,*69,536 Yu-Gi-Oh! 5D's vol.1
25, *24,852 *,*24,582 Crows Zero vol.8
26, *22,610 *,210,233 Saki vol.7
27, *21,603 *,*46,460 Gakuen Babysitters vol.1
28, *21,018 *,310,896 Thermae Romae vol.1
29, *20,826 *,*20,826 Coppelion vol.7
30, *20,366 *,*80,664 Gunslinger Girl vol.12

41, *16,000 2,282,000 One Piece vol.57

Sources: Oricon Manga Ranking, Mycom Journal

Weekly Light Novel Ranking for May 3 - 9
*1, 39,968 125,848 Katekyo Hitman Reborn! Hidden Bullet vol.4
*2, 32,198 *32,198 Ore no Imouto ga Konna ni Kawaii Wake ga Nai vol.6
*3, 23,144 131,626 Tenchi Meisatsu
*4, 10,847 *36,492 Bungaku Shoujo Side Stories vol.3
*5, *9,840 **9,840 Ore to Kanojo ga Maoh to Yusha de Seitokaicho vol.
*6, *8,964 226,838 Durarara!! vol.1
*7, *8,947 160,282 Yojouhan Shinwa Taikei
*8, *8,079 177,948 Durarara!! vol.2
*9, *7,909 **7,909 Kamisama no Memocho vol.5
10, *7,438 153,281 Durarara!! vol.3
11, *7,043 135,824 Durarara!! vol.4
12, *6,427 136,968 Durarara!! vol.5

Source: Oricon Novel Ranking